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EP3958801B1 - Patch de capteur destiné à être fixé à une plaque de base - Google Patents

Patch de capteur destiné à être fixé à une plaque de base Download PDF

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Publication number
EP3958801B1
EP3958801B1 EP20723281.0A EP20723281A EP3958801B1 EP 3958801 B1 EP3958801 B1 EP 3958801B1 EP 20723281 A EP20723281 A EP 20723281A EP 3958801 B1 EP3958801 B1 EP 3958801B1
Authority
EP
European Patent Office
Prior art keywords
sensor patch
neck portion
elongated
adhesive layer
base plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20723281.0A
Other languages
German (de)
English (en)
Other versions
EP3958801A1 (fr
Inventor
Kamilla Grove SUND
Jais Ask HANSEN
Lars MOLZEN
Lars Stendevad WINDEBALLE
Esben Stroebech
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coloplast AS
Original Assignee
Coloplast AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Coloplast AS filed Critical Coloplast AS
Publication of EP3958801A1 publication Critical patent/EP3958801A1/fr
Application granted granted Critical
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices ; Anti-rape devices
    • A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Colostomy devices
    • A61F5/4404—Details or parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices ; Anti-rape devices
    • A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Colostomy devices
    • A61F5/443—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Colostomy devices having adhesive seals for securing to the body, e.g. of hydrocolloid type seals, e.g. gels, starches, karaya gums
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices ; Anti-rape devices
    • A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Colostomy devices
    • A61F5/445—Colostomy, ileostomy or urethrostomy devices

Definitions

  • the invention relates to a sensor patch for attachment to a base plate for an ostomy appliance.
  • Stomal output often contains body fluids and visceral contents that are aggressive to both the skin of a user and to ostomy devices, these have a detrimental effect on the efficiency and integrity of the adhesive materials that are applied to attach the ostomy device to the user's skin surface.
  • safe, reliable and efficient ostomy devices are evidently highly desirable.
  • the primary factor of adhesive failure is simply a question of how much time has elapsed since the base plate of the ostomy appliance was first applied to the user's skin surface.
  • the peristomal skin surface continuously secretes some moisture (e.g. sweat).
  • adhesives of base plates for ostomy devices include hydrocolloid materials which are capable of absorbing high levels of moisture, thereby stabilizing the polymer matrix of the adhesive material and prolonging the lifetime ("wear time") of the base plate.
  • the adhesion capability of the base plate no longer can support the force exerted on the base plate from the load of the output collecting bag, and the appliance must be replaced.
  • ostomy appliances could greatly benefit from an appliance solution which provides them with better guidance and options regarding how and - not least - how quickly to react to beginning failure or leakage of the adhesive of the base plate of the appliance. More generally, ostomists and health care professionals alike would welcome improvements in ostomy devices to reduce or eliminate the occurrence of sudden leakage incidents.
  • US6171289B1 (Millot ) relates to a disposable device for securing an ostomy bag to a stoma, the device comprising an adhesive seal and means for detecting wetness of the adhesive composition and means for triggering an alarm when a predetermined level of wetness is reached in the adhesive.
  • WO2007/098762A1 (Thirstrup ) relates to a method and dressing for detecting detachment of the dressing, which is applied to a surface of an at least partly electrically conductive object.
  • the dressing comprises an adhesive and at least two electrodes arranged in a distance from the electrically conductive object. Changes in capacitance are detected, and an alarm is activated when the changes of the capacitance reach a predetermined value.
  • the sensor patch for attachment to a base plate for an ostomy appliance.
  • the sensor patch comprises a distal side and a proximal side comprising at least one adhesive layer, a part of the distal side being adapted for attachment to the base plate and the proximal adhesive side adapted to adhere to the skin surface of a user.
  • stoma and ostomy are used to denote a surgically created opening bypassing the intestines or urinary tract system of a person.
  • the words are used interchangeably, and no differentiated meaning is intended. The same applies for any words or phrases derived from these, e.g. “stomal”, “ostomies” etc.
  • solid and liquid wastes emanating from the stoma may be referred to as both stomal "output,” “waste(s),” and “fluids” interchangeably.
  • a subject having undergone ostomy surgery may be referred to as “ostomist” or “ostomate” - moreover, also as “patient” or "user”.
  • HCP health care professional
  • the referral is to the skin-facing side, when the ostomy appliance is worn by a user.
  • the referral is to the side facing away from the skin, when the ostomy appliance is worn by a user.
  • the proximal side is the side closest to the user, when the appliance is fitted on a user and the distal side is the opposite side - the side furthest away from the user in use.
  • the axial direction is defined as the direction of the stoma, when the appliance is worn by a user.
  • the axial direction is generally perpendicular to the skin or abdominal surface of the user.
  • the radial direction is defined as transverse to the axial direction that is transversely to the direction of the stoma, i.e. "across" the distal/proximal surface of the base plate.
  • the words “inner” and “outer” may be used. These qualifiers should generally be perceived with respect to the radial direction, such that a reference to an “outer” element means that the element is farther away from a centre portion of the ostomy appliance than an element referenced as “inner”.
  • “innermost” should be interpreted as the portion of a component forming a centre of the component and/or being adjacent to the centre of the component.
  • outermost should be interpreted as a portion of a component forming an outer edge or outer contour of a component and/or being adjacent to that outer edge or outer contour.
  • first, second, third, “fourth”, “primary”, “secondary”, “tertiary” etc. does not imply any particular order or importance but are included merely to identify individual elements. Furthermore, the labelling of a first element does not imply the presence of a second element and vice versa.
  • a sensor patch for attachment to a base plate for an ostomy appliance such as to facilitate detection of moisture propagation in the adhesive material provided for attaching the base plate to the skin surface of a user as well as detection of increased risk of leakage.
  • the sensor patch may allow electronic measurements of performance of the base plate and/or to facilitate detection of increasing risks of leakage and/or to facilitate detection of decreasing adherence of the base plate to the skin of the user.
  • the ostomy appliance comprises a base plate and an ostomy pouch (also referred to as an ostomy bag).
  • the ostomy appliance may be a colostomy appliance, an ileostomy appliance or a urostomy appliance.
  • the ostomy appliance may be a two-part ostomy appliance, i.e. the base plate and the ostomy pouch may be releasably coupled e.g. with a mechanical and/or an adhesive coupling, e.g. to allow that a plurality of ostomy pouches can be utilized (exchanged) with one base plate.
  • the base plate may comprise a coupling ring for coupling an ostomy pouch to the base plate.
  • a two-part ostomy appliance may facilitate correct application of the base plate to skin, e.g. to an improved user sight of the stomal region.
  • the ostomy appliance may be a one-part ostomy appliance, i.e. the base plate and the ostomy pouch may be fixedly attached to each other.
  • the base plate is configured for coupling to a user's stoma and/or skin surrounding the stoma, such as a peristomal skin area.
  • the base plate may comprise a first adhesive layer, i.e. a first layer of an adhesive material.
  • a proximal surface of the first adhesive layer adheres to the user's skin in the peristomal area and/or to additional seals, such as sealing paste, sealing tape and/or sealing ring.
  • the first adhesive layer may be made of a first composition.
  • the first composition may comprise one or more polyisobutenes and/or styrene-isoprene-styrene.
  • the first composition may comprise one or more hydrocolloids.
  • the first composition may comprise one or more water soluble or water swellable hydrocolloids.
  • the first composition may be a pressure sensitive adhesive composition suitable for medical purposes comprising a rubbery elastomeric base and one or more water soluble or water swellable hydrocolloids.
  • the first adhesive layer may comprise a distal surface and a proximal surface.
  • the proximal surface of the first adhesive layer may be configured to adhere to the user's skin.
  • the distal surface of the first adhesive layer may be configured to face away from the skin of the user.
  • the first adhesive layer may form the adhesive surface of the base plate adapted for attachment of the base plate to the skin surface of the user.
  • the first adhesive layer may form part of the adhesive surface of the base plate adapted for attachment of the base plate to the skin surface of the user.
  • the base plate may comprise a second adhesive layer, i.e. a second layer of an adhesive material, also denoted rim adhesive layer.
  • the second adhesive layer may be of a different adhesive material than the first adhesive layer.
  • the second adhesive layer may be made of a second composition.
  • the second composition may comprise one or more polyisobutenes and/or styrene-isoprene-styrene.
  • the second composition may comprise one or more hydrocolloids.
  • the second composition may comprise one or more water soluble or water swellable hydrocolloids.
  • the second composition may be a pressure sensitive adhesive composition suitable for medical purposes comprising a rubbery elastomeric base and one or more water soluble or water swellable hydrocolloids.
  • the second adhesive layer may comprise a distal surface and a proximal surface.
  • the proximal surface of the second adhesive layer may be configured to adhere to the user's skin, e.g. at least at a rim portion of the second adhesive layer.
  • the distal surface of the second adhesive layer may be configured to face away from the skin of the user.
  • the second adhesive layer may be covering a larger area than the first adhesive layer, e.g. such that the proximal surface of the second adhesive layer forms an adhesive rim surrounding the first adhesive layer.
  • the sensor patch may comprise at least a first and second adhesive layer, which may be made of same type of compositions as the at least first and second adhesive layers of the base plate as described above.
  • the sensor patch is adapted for attachment to the base plate.
  • the sensor patch may be configured to be positioned between the skin of the user and the proximal side of the base plate.
  • the sensor patch may be adapted for attachment to the first adhesive layer of the base plate.
  • a distal side of the sensor patch may be configured to be facing the proximal surface of the first adhesive layer of the base plate.
  • the sensor patch, such as a distal side of the sensor patch may be configured to adhere to the proximal surface of the first adhesive layer of the base plate.
  • the sensor patch may comprise a stomal opening and/or the sensor patch may be adapted to form a stomal opening.
  • Each layer of the sensor patch as described below, may comprise stomal openings and/or be adapted to form a stomal opening for collectively forming the stomal opening of the sensor patch.
  • the stomal opening of the sensor patch may be configured to be aligned with the stomal opening of the base plate, such as to collectively form the stomal opening of the combined base plate and sensor patch.
  • the size and/or shape of the stomal opening of the sensor patch may be adjusted by the user or nurse before application of the sensor patch to accommodate the user's stoma.
  • the size and/or shape of the stomal opening of the sensor patch may be adjusted together with adjustment of the stomal opening of the base plate, e.g. after the sensor patch has been attached to the base plate.
  • the stomal opening(s) may have a centre point.
  • the sensor patch may comprise a sensor assembly.
  • the sensor assembly may form a sensor assembly layer.
  • the sensor assembly may have a distal side and a proximal side.
  • the sensor patch may be configured to be positioned on the base plate such that the distal surface of the sensor assembly is coupled to the proximal adhesive surface of the base plate.
  • the sensor assembly may comprise a plurality of electrodes.
  • the plurality of electrodes may include a first electrode and a second electrode for forming a first sensor.
  • the plurality of electrodes may include a third electrode, a fourth electrode, a fifth electrode and/or a sixth electrode.
  • the first electrode may be a common ground electrode.
  • a second sensor may be formed by the first electrode and the third electrode
  • a third sensor may be formed by the first electrode and the fourth electrode
  • a fourth electrode may be formed by the first electrode and the fifth electrode
  • a fifth electrode may be formed by the first electrode and the sixth electrode.
  • Each electrode may have respective connection parts for connecting the electrodes to respective terminal elements of a monitor device.
  • the plurality of electrodes is electrically conductive and may comprise one or more of metallic (e.g. silver, copper, gold, titanium, aluminium, stainless steel), ceramic (e.g. ITO), polymeric (e.g. PEDOT, PANI, PPy), and carbonaceous (e.g. carbon black, carbon nanotube, carbon fibre, graphene, graphite) materials.
  • metallic e.g. silver, copper, gold, titanium, aluminium, stainless steel
  • ceramic e.g. ITO
  • polymeric e.g. PEDOT, PANI, PPy
  • carbonaceous e.g. carbon black, carbon nanotube, carbon fibre, graphene, graphite
  • the plurality of electrodes may form loops and/or open loops. Open loop electrode(s) enable(s) electrode arrangement in few or a single electrode layer.
  • the sensor assembly may comprise a support layer, e.g. with a proximal surface and a distal surface.
  • the plurality of electrodes may be provided, such as formed, on the proximal surface of the support layer, e.g. the plurality of electrodes may be positioned on the proximal surface of the support layer.
  • the sensor assembly may comprise a masking element, e.g. with a proximal surface and a distal surface.
  • the masking element may be configured to electrically insulate at least parts of the plurality of electrodes from proximal layers, such as a first adhesive sensor layer.
  • the masking element may cover or overlap parts of the plurality electrodes, e.g. when seen in the axial direction.
  • the sensor patch may comprise a first adhesive sensor layer, e.g. with a proximal side and a distal side.
  • the first adhesive sensor layer may be arranged on a proximal side of the sensor assembly.
  • the first adhesive sensor layer such as the proximal side of the first adhesive sensor layer, may form the proximal side of the sensor patch.
  • the proximal side of the first adhesive sensor layer may be configured to adhere to the user's skin.
  • the combined base plate and sensor patch may form an adhesive proximal surface configured to be applied to the skin surface of the user.
  • the first adhesive sensor layer may be made of a first adhesive sensor material, such as the first composition, the second composition or a third composition.
  • the third composition may comprise one or more polyisobutenes and/or styrene-isoprene-styrene.
  • the third composition may comprise one or more hydrocolloids.
  • the third composition may comprise one or more water soluble or water swellable hydrocolloids.
  • the third composition may be a pressure sensitive adhesive composition suitable for medical purposes comprising a rubbery elastomeric base and one or more water soluble or water swellable hydrocolloids.
  • the sensor patch is adapted to form a stomal opening with a centre point.
  • the stomal opening is configured to allow passage of output through the stomal opening and into an ostomy pouch attached to the base plate.
  • the sensor patch may allow electronic measurements of performance of the base plate and/or to facilitate detection of increasing risks of leakage and/or to facilitate detection of decreasing adherence of the base plate to the skin of the user, it is important that the sensor patch perform its function and do deliver reliable detections. It is desirable to provide a sensor patch that is comfortable to use and to provide a sensor patch that may reduce the risk of rupture which evidently will lead to false measurements and non-detected undesired leakage.
  • Embodiments relates to a sensor patch for attachment to a base plate for an ostomy appliance.
  • the sensor patch comprises a distal side and a proximal side comprising at least one adhesive layer, a part of the distal side being adapted for attachment to the base plate and the proximal adhesive side adapted to adhere to the skin surface of a user,
  • the sensor patch comprises two or more electrodes and a monitor interface for forming a connection to a monitor device
  • the sensor patch comprises a central portion and a neck portion, the electrodes extend from the central portion to the neck portion, the neck portion comprises a flexible element being adapted to allowing the central portion and the neck portion to be flexibly movable relative to each other.
  • a sensor patch following the movements of the user is provided, thus the sensor patch is more comfortable to use. Moreover, the mechanical stresses are more evenly distributed, thus the risk of rupture of the sensor patch is reduced.
  • the flexible element allows the central portion and the neck portion of the sensor patch to move relative to each other following the movement of the skin of a user, and thereby provide a more comfortable sensor patch.
  • the neck portion of the sensor patch is affected by mechanical stresses when the sensor patch is adhered to the base plate and due to movement of the user.
  • the sensor patch may distribute mechanical stresses in the transition zone at the rim of the base plate more evenly and reduces the risk of rupture in the neck portion of the sensor patch.
  • the sensor patch feels more comfortable on the sensitive skin surrounding the stoma.
  • the skin of the abdomen of a user of an ostomy appliance may be sensitive and the provision of a flexible neck portion will reduce the amount of undesirable and uncomfortable stretching of the peristomal skin.
  • the flexible element may be positioned juxtaposed the central portion of the sensor patch. Mechanical stresses in the transition zone between the central portion and the neck portion may be more evenly distributed and the risk of rupture in the neck portion of the sensor patch is reduced.
  • the flexible element may comprise one or more elongated through-going apertures.
  • the flexible element may comprise one or more elongated through-going slits.
  • the flexible element may comprise one or more indents, the indents extend inwards from the periphery of the neck portion towards a centre axis (C.A) extending radially from a centre point of the central portion to the monitor interface at the neck portion.
  • C.A centre axis
  • centre axis is meant in this disclosure as a centre axis extending radially from an innermost centre point of the central portion to the position of the monitor interface at the neck portion.
  • the centre axis (C.A) is illustrated in some of the figures by a dotted line.
  • the neck portion may be symmetric shaped along the centre axis.
  • the flexible element and the sensor patch may be more flexible and stretchable particularly in radial direction in relation to the centre axis (C.A).
  • At least some of the one or more elongated through-going apertures, the one or more elongated through-going slits and/or the one or more indents may extend perpendicularly to the centre axis.
  • At least some of the one or more elongated through-going apertures, the one or more elongated through-going slits and/or the one or more indents are arranged in parallel rows, every other row may be offset with respect to intermediate rows as to form an accordion-shaped or zig zag-like pattern.
  • the flexible element and the sensor patch may be more flexible and stretchable and allow the central portion and the neck portion to be flexibly movable relative to each other.
  • At least some of the one or more elongated through-going apertures, the one or more elongated through-going slits and/or the one or more indents may be arranged symmetrically along the centre axis.
  • At least some of the one or more elongated through-going apertures, the one or more elongated through-going slits and/or the one or more indents may comprise rounded edges.
  • risk of cracks in the top film is reduced and the fracture properties are improved.
  • the proximal side of the sensor patch may comprise at least a first and a second adhesive layer.
  • the at least first and the second adhesive layers may be positioned adjacent each other in radial direction, the first adhesive layer may cover at least part of the central portion and the second adhesive layer covers at least part of the neck portion.
  • the at least first and second adhesive layers are made of compositions having different elastic properties
  • the second adhesive layer covering the flexible element of the neck portion is more flexible and/or stretchable than the first adhesive layer covering at least part of the central portion.
  • the second adhesive layer extends in radially direction towards the innermost portion of the sensor patch configured for providing an overlap of the second adhesive layer and the outer rim of the base plate when adhered together.
  • the outer contour of the sensor patch comprises an oval or pear-shape, the neck portion being narrower than the central portion. Provision of a neck for a sensor patch having a design reducing mechanical stress of the neck of sensor patch and sensor elements.
  • the neck portion may have a length along the centre axis from the centre point of the central portion to the interface coupling of 40-110 mm, such as 60-90 mm, such as 70 mm.
  • a universal sensor patch for use with a base plate is provided. This allows the user to couple a monitor device to the interface coupling outside but still at the proximity of the outer periphery of the base plate.
  • At least part of the electrodes comprises a z-shaped layout or similar pattern to form flexible electrodes. Allowing the sensor patch to be stretched without breaking or destroy the sensibility of the electrodes.
  • Figure 1-7 show an embodiment of a sensor patch.
  • Figure 1 and figure 2 illustrate a top view of a sensor patch 10 comprising a first electrode 12a, a second electrode 12b and a ground electrode 12g arranged in a spatial layout 101.
  • the electrodes 12a, 12b are provided on a distal surface of an adhesive layer 15.
  • the distal surface of the sensor patch is adapted for attachment to an adhesive surface of a baseplate (not shown in the figures), whereby the electrodes 12a, 12b, 12g become layered between the adhesive layer 15 and the baseplate.
  • the spatial layout 101 is shown to resemble a majority of a ring and comprises a monitor interface 13.
  • the monitor interface 13 comprises contact points for establishing an electrical connection between the electrodes 12a, 12b, 12g and a monitor device capable of controlling and assessing a current in the electrodes.
  • the monitor interface 13 is provided in a neck portion 185 extending radially away from a centre point 4 of the sensor patch 10.
  • the neck portion 185 is configured with a length sufficient to extend beyond the extension of a baseplate onto which the sensor patch is to be attached.
  • the electrodes 12 (12a, 12b, 12g) form one or more sensors.
  • the sensor patch 10 comprises a layout of three electrodes; a first electrode 12a, a second electrode 12b, and a ground electrode 12g.
  • the first 12a and the second electrode 12b are live.
  • the ground electrode 12g forms the ground for the live first 12a and second electrodes 12b.
  • two sensors are formed.
  • the first sensor can be formed between the first electrode 12a and the ground electrode 12g
  • a second sensor can be formed between the second electrode 12b and the ground electrode 12g.
  • the one or more sensors enable that changes in relevant electrical quantities, e.g. resistance, can be monitored.
  • the sensor patch 10 comprises sensing abilities.
  • the sensor patch is adapted for attachment to a baseplate for monitoring the presence or liquid in an interface between the skin surface of a user and the baseplate.
  • the sensor patch can be adapted for assessing the amount of moisture absorbed in the adhesive layer, whereby the state or health of the adhesive of the baseplate can be assessed.
  • the state or health of the adhesive of the baseplate may be indicative of erosion and can be used for predicting imminent risk of leakage and/or detachment of the baseplate.
  • FIG 2 illustrates a sensor patch 10 comprising three electrodes in an alternative spatial layout 101 to the spatial layout illustrated in figure 1 .
  • the sensor patch comprises a first electrode 12a, a second electrode 12b, and a ground electrode 12g.
  • the first 12a and the second electrode 12b are live.
  • the electrodes 12a, 12b, 12g and a monitor interface 13 are configured for forming a connection to a monitor device.
  • the ground electrode 12g forms the ground for the live first 12a and second electrodes 12b.
  • a first sensor can be formed between the first electrode 12a and the ground electrode 12g
  • a second sensor can be formed between the second electrode 12b and the ground electrode 12g.
  • the electrodes 12,12a,12b,12g extend in a spatial layout 101 having electrodes at the innermost rim of the sensor patch at the stomal opening 17.
  • FIG. 3 illustrates an exploded view of a sensor patch 10.
  • the sensor patch 10 comprises a sensor assembly 107 comprising a support layer 19 with electrodes 12 formed on a proximal surface of the support layer.
  • the sensor assembly 107 comprises a masking element 104, e.g. with a proximal surface and a distal surface.
  • the masking element 104 may be configured to electrically insulate at least parts of the plurality of electrodes 12 from proximal layers, such as a first adhesive sensor layer 15.
  • the masking element covers or overlaps parts of the plurality electrodes, e.g. when seen in the axial direction.
  • the sensor patch 10 comprises a first adhesive layer 15.
  • the first adhesive layer is arranged on a proximal side of the sensor assembly 107.
  • the first adhesive layer 15 forms the proximal side of the sensor patch.
  • the proximal side of the first adhesive sensor layer is configured to adhere to the user's skin.
  • the adhesive layer of the sensor patch may be provided with a release liner 102 and the distal side may be provided with a top film on the distal side.
  • the proximal side of the sensor patch comprises at least a first and second adhesive layer 15a, 15b. This is illustrated by a dotted line in figure 3 .
  • the two adhesive layers 15a, 15b are positioned adjacent to each other in radial direction, a first adhesive layer 15a covering at least part of the central portion and a second adhesive layer 15b covering the neck portion 185.
  • the neck portion extends further than the outer rim of the base plate when the sensor patch is applied to such base plate, thereby leaving a part of the neck portion unattached to the base plate.
  • the flexible element may be positioned at the neck portion 185 adjacent or overlapping with the outer rim of the base plate in radial direction.
  • the central portion 180 comprises a first adhesive 15a and the neck portion comprises a second adhesive 15b.
  • the first adhesive and the second adhesive are the same type of adhesive.
  • the first adhesive and the second adhesive may have different properties.
  • the adhesives may differ with respect to adhesive tack and/or softness.
  • the sensor patch may comprise at least a first and a second adhesive layers made by one or more compositions comprising one or more polyisobutenes and/or styrene-isoprene-styrene.
  • the one or more composition may comprise one or more hydrocolloids.
  • the one or more composition may comprise one or more water soluble or water swellable hydrocolloids.
  • the one or more composition may be a pressure sensitive adhesive composition suitable for medical purposes comprising a rubbery elastomeric base and one or more water soluble or water swellable hydrocolloids.
  • the second adhesive layer 15b may cover at least part of the neck portion which may be more flexible and stretchable than the adhesive layer 15a covering the central portion.
  • the two adhesive layers are made of compositions comprising different properties relating to flexibility, allowing the adhesive layer of the flexible element to be stretched in radially direction without plastic deformation.
  • the second flexible adhesive layer covering the neck portion extends in radially direction towards the innermost portion of the sensor patch configured for an overlap of the flexible adhesive layer and the outer periphery of the base plate.
  • the at least first and second adhesive layers may have a substantially uniform thickness.
  • the first adhesive layer may have a thickness in the range from 0.1 mm to 1.5 mm, for example in the range from 0.2 mm to 1.2 mm.
  • FIG 4 and figure 5 illustrate embodiments of a sensor patch.
  • Embodiments A to I is illustrated in figure 4 and embodiments J to O are illustrated in figure 5 .
  • Figure 4-A illustrates a sensor patch comprising a central portion 180 and a neck portion 185 and a flexible element 186 positioned at the neck portion 185 adjacent the central portion 180.
  • the central portion comprises a stomal opening 17 and a through-going opening 18 partly encircling the stomal opening 17.
  • the flexible element 186 comprises a first row of two indents 21 and a second row of two indents 22.
  • a cross-shaped elongated through-going aperture 31 is positioned between the first and second row of indents 21,22.
  • the elongated through-going aperture 31 and the four indents 21,22 extend in parallel across the neck portion perpendicular to the centre axis extending radially from a centre point 4 of the central portion to the position of the monitor interface at the neck portion.
  • Figure 4-B illustrates a flexible element 186 comprising a single row of two indents 21 and an elongated through-going aperture 31, which comprises an indentation 51 extending across the elongated through-going aperture 31 forming a T-shaped elongated through-going aperture.
  • Figure 4-C illustrates two rows of two indents 21,22 and two elongated through-going slits 41,42 comprising rounded ends 62, 63.
  • the first innermost positioned row is one elongated through-going slit 41.
  • Figure 4-D illustrates a flexible element 186 comprising two elongated through-going apertures 31,32 arranged in a first set of two parallel rows.
  • the flexible element 186 comprises four indents 21,22.
  • the indents 21,22 extend inwards from the periphery of the neck portion towards the centre axis.
  • the indents extend perpendicular to the centre axis and are arranged in a second set of two parallel rows.
  • the first set and second set of rows are positioned in parallel intermediate each other. Every other row being offset with respect to intermediate rows as to form an accordion-shaped or zig zag-shaped pattern.
  • Figure 4-F illustrates a similar sensor patch as illustrated in figure 4-D .
  • the width of the neck portion is larger in the embodiment illustrated in figure 4-F , thus the indents and the through-going slits comprise a longer length as to form uniformed sizes of tracks for the electrodes extending through the flexible element from the central portion 180 to the monitor interface (not shown).
  • Figure 4-G illustrates an embodiment of the sensor patch which comprises a flexible element 186 comprising a first set of rows, each row comprising two indents 21,22 and a second set of rows, each row comprises an elongated through-going aperture 31.
  • the elongated through-going aperture 31 comprises two indentations 51,52 across the midpoint, thereby the two elongated through-going apertures 31 comprise a cross-shape.
  • the two elongated through-going apertures 31 and the four indents 21,22 extend in parallel across the neck portion perpendicular to the centre axis.
  • the first set of rows and the second set of rows are being offset with respect to intermediate rows as to form an accordion-shaped or zig zag-shaped pattern, and the two elongated through-going apertures 31,32 and the four elongated indents 21,22 are arranged symmetrically along the centre axis, such that the centre axis forms an axis of symmetry.
  • the outer contour of the sensor patch comprises a pear-shape.
  • the embodiment illustrated in figure 4-H comprises a similar shaped flexible element as the embodiment illustrated in figure 4-G , however the two elongated through-going apertures 31,32 and the four elongated indents are slightly longer and the neck portion slightly wider.
  • the embodiment illustrated in figure 4-H and 4-I comprises similar shape, however the indentations 51 from the embodiment illustrated in figure 4-G are removed.
  • the indentations 51 from the embodiment illustrated in figure 4-G are removed.
  • the embodiments of a sensor patch illustrated in figure 5 comprise a plurality of parallel staggered rows and different widths of the neck portion.
  • a first set of parallel elongated through-going slits 41,42,43 and a second set of parallel elongated through-going slits and indents are positioned off set in a direction perpendicular to the centre axis in between the first set of parallel elongated through-going slits.
  • FIG. 5-K a similar shaped sensor patch is illustrated.
  • the neck portion comprises a width equal to the central portion, thus the number of slits in each row is increased. Some rows comprise a line of four consecutive through-going slits.
  • the size of the flexible element 186 may vary and the part of the flexible element abutting the central portion may comprise an inner curved shape as illustrated in figure 5-L .
  • the shape of the elongated through-going apertures 31,33 may vary as well.
  • the shape may be formed like an oval-shape or a diamond-shape as illustrated in figure 5-M .
  • FIG. 5-O illustrates the extension of the central portion 180, the neck portion 185 and the flexible portion 186.
  • the flexible portion being positioned abutting the central portion 180 forming a transition zone between the central portion 180 and the neck portion 185.
  • the outer contour of the sensor patch may comprise an oval or pear-shape, the neck portion being narrower than the central portion.
  • the outer contour of the sensor patch illustrated in figure 4-K and 4-L comprises an oval shape, where the neck portion comprises a width similar to the central portion.
  • the outer contour comprises a pear-shape, where the neck portion has a narrower width than the central portion across the centre axis.
  • FIG. 6 illustrates an embodiment of the sensor patch 10 for attachment to a base plate for an ostomy appliance.
  • the sensor patch 10 comprises a distal side 16 and a proximal side 14.
  • the proximal side 14 comprises at least one adhesive layer 15.
  • the sensor patch comprises a circular-shaped central portion 180 and a neck portion 185.
  • the neck portion has a length corresponding to a distance along the centre axis from the centre point of the central portion to the interface coupling of 40-110 mm, such as 60-90 mm, such as 70 mm.
  • the proximal adhesive side 14 is adapted to adhere to the skin surface of a user and the circular-shaped central portion is adapted for being attached to the base plate.
  • the neck portion 185 extends radially outwards in one direction from the central section. The neck portion extends further than the outer rim of the base plate when the sensor patch is applied to such base plate, thereby leaving a part of the neck portion unattached to the base plate.
  • the flexible element may overlap in radially direction with the outer rim of the base plate.
  • the sensor patch 10 comprises a layout of a plurality of electrodes 12.
  • the electrodes 12 extend from the central portion 180 to the interface coupling 300 at the neck portion 185 via the flexible element 186.
  • the flexible element 186 comprises a first row of two indents extending in parallel from the periphery towards the centre axis and a through-going aperture 31.
  • the indents 21 and the through-going aperture 31 provide a z-shaped track for the electrodes 12.
  • the monitor interface 13 is configured for electrically and/or mechanically connecting the sensor patch 10 of the ostomy appliance (base plate 4) to the monitor device 310.
  • the monitor interface 13 of the sensor patch comprises an interface coupling 300 for forming a mechanical connection, such as a releasable coupling between the monitor device 310 and the sensor patch.
  • the interface coupling 300 is configured to engage with a complementary shaped coupling part of the monitor device for releasably coupling the monitor device to the sensor patch 10.
  • the periphery of the neck portion at the transition to the indents comprises a rounded outer edge 61.
  • the neck portion 185 comprises a flexible element 186 being adapted to allow the central portion 180 and the neck portion to be moved relative to each other.
  • the flexible element 186 is positioned juxtaposed the central portion of the sensor patch.
  • the sensor patch comprises a plurality of electrodes 12 extending from the central portion 180 to the neck portion 185.
  • the spatial layout of the electrodes is adapted the shape of the sensor patch.
  • the electrodes 12 comprise a z-shaped spatial layout 101 at the flexible element 186.
  • the elongated through-going aperture 31 of the flexible element comprises an indentation 51 to form a T-shaped through-going aperture.
  • the adhesive layer 15 of the flexible element forms a track similar in shape as the layout of the electrodes 12.
  • the flexible element comprises two opposed positioned elongated indents 21.
  • the indents and the through going hole extend in parallel in staggered manner.
  • the two indents 21 comprise rounded edges at the periphery of the sensor patch.
  • Figure 7 illustrates a sensor patch 10 where the flexible element 186 comprises two elongated through-going slits 41,42 and two pairs of narrow elongated indents 21,22.
  • the embodiment of the illustrated sensor patch comprises a flexible element 186 comprising two elongated through-going slits 41,42 arranged in a first set of two parallel rows.
  • the flexible element 186 comprises four indents 21,22.
  • the indents 21,22 extending inwards from the periphery of the neck portion towards the centre axis (C.A).
  • the centre axis is illustrated as a dotted line which extends radially from the centre point 4 of the central portion to the interface coupling 300 adapted to be coupled with a monitor device at the neck portion.
  • the indents are perpendicular to the centre axis and are arranged in a second set of two parallel rows.
  • the first set and second set of rows are positioned intermediate each other. Every other row being offset with respect to intermediate rows as to form an accordion-shaped or zig zag-shaped pattern forming a track for the electrodes 12.
  • At least part of the electrodes comprises a zig zag layout or similar pattern to form flexible electrodes.
  • the two elongated through-going slits 41,42 and the four narrow elongated indents 21,22 have rounded edges at the ends (62,63) of the slits.
  • the neck portion is symmetrically shaped along the centre axis.
  • the central portion 180 is provided with a stomal opening 17 for receiving a stoma.
  • a through going opening 18 partly encircling the stomal opening.
  • the sensor patch comprises a central portion.
  • the central section is provided with a stomal opening.
  • the stomal opening may be arranged substantially concentric to a stomal opening in the base plate, the opening being accommodated for receiving a stoma.
  • the central section has a substantially circular or oval shape.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Nursing (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Claims (17)

  1. Patch capteur (10) destiné à être fixé à une plaque de base pour un appareillage de stomie, le patch capteur (10) comprenant un côté distal (16) et un côté proximal (14) comprenant au moins une couche adhésive (15, 15a, 15b), une partie du côté distal (16) étant conçue pour être fixée à la plaque de base et le côté adhésif proximal (14) étant conçu pour adhérer à la surface cutanée d'un utilisateur, le patch capteur (10) comprenant deux électrodes ou plus (12, 12a, 12b, 12g) et une interface de moniteur (13) pour former une connexion à un dispositif de moniteur (310), et le patch capteur (10) comprenant une partie centrale (180) et une partie de col (185), les électrodes (12, 12a, 12b, 12g) s'étendant de la partie centrale (180) à la partie de col (185), caractérisé en ce que la partie de col comprend un élément flexible (186) étant conçu pour permettre à la partie centrale (180) et à la partie de col (185) d'être flexiblement mobiles l'une par rapport à l'autre.
  2. Patch capteur selon la revendication 1, dans lequel l'élément flexible (186) est positionné et juxtaposé à la partie centrale (180) du patch capteur (10).
  3. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel l'élément flexible comprend une ou plusieurs ouvertures traversantes allongées (31, 32, 33).
  4. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel l'élément flexible (186) comprend une ou plusieurs fentes traversantes allongées (41, 42, 43).
  5. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel l'élément flexible (186) comprend une ou plusieurs indentations (21, 22), les indentations s'étendant vers l'intérieur à partir de la périphérie de la partie de col (185) vers un axe central (C.A) s'étendant radialement à partir d'un point central (4) de la partie centrale jusqu'à l'interface de moniteur au niveau de la partie de col.
  6. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel la partie de col (185) est formée symétriquement le long de l'axe central (C.A).
  7. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel au moins quelques-unes des une ou plusieurs ouvertures traversantes allongées (31, 32, 33), des une ou plusieurs fentes traversantes allongées (41, 42, 43) et/ou des une ou plusieurs indentations (21, 22) s'étendent perpendiculairement à l'axe central (C.A.).
  8. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel au moins quelques-unes des une ou plusieurs ouvertures traversantes allongées (31, 32, 33), des une ou plusieurs fentes traversantes allongées (41, 42, 43) et/ou des une ou plusieurs indentations (21, 22) sont agencées en rangées parallèles, chaque autre rangée étant décalée par rapport aux rangées intermédiaires de manière à former un motif en accordéon ou en zigzag.
  9. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel au moins quelques-unes des une ou plusieurs ouvertures traversantes allongées (31, 32, 33), des une ou plusieurs fentes traversantes allongées (41, 42, 43) et/ou des une ou plusieurs indentations (21, 22) sont agencées symétriquement le long de l'axe central (C.A).
  10. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel au moins quelques-unes des une ou plusieurs ouvertures traversantes allongées (31, 32, 33), des une ou plusieurs fentes traversantes allongées (41, 42, 43) et/ou des une ou plusieurs indentations (21, 22) comprennent des bords arrondis (61, 62, 63).
  11. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel le côté proximal (14) du patch capteur (10) comprend au moins une première et une seconde couche adhésive (15a, 15b).
  12. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel au moins les première et seconde couches adhésives (15a, 15b) sont positionnées l'une à côté de l'autre dans le sens radial, la première couche adhésive couvrant au moins une partie de la partie centrale et la seconde couche adhésive couvrant au moins une partie de la partie de col (185).
  13. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel au moins les première et seconde couches adhésives (15a, 15b) sont constituées de compositions ayant des propriétés élastiques différentes, la seconde couche adhésive (15b) couvrant l'élément flexible (186) de la partie de col (185) étant plus flexible et/ou étirable que la première couche adhésive (15a) couvrant au moins une partie de la partie centrale (180).
  14. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel la seconde couche adhésive (15b) s'étend dans le sens radial vers la partie la plus intérieure du patch capteur configurée pour fournir un chevauchement de la seconde couche adhésive (15b) et le rebord extérieur de la plaque de base lorsqu'ils sont mis à adhérer ensemble.
  15. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel le contour externe du patch capteur est de forme ovale ou piriforme, la partie de col (185) étant plus étroite que la partie centrale (180).
  16. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel la partie de col (185) a une longueur correspondant à une distance le long de l'axe central (C.A) entre le point central (4) de la partie centrale et l'accouplement d'interface (300) de 40 à 110 mm, telle que 60 à 90 mm, telle que 70 mm.
  17. Patch capteur selon l'une quelconque des revendications précédentes, dans lequel au moins une partie des électrodes (12, 12a, 12b, 12g) comprend une disposition en forme de z ou un motif similaire pour former des électrodes flexibles.
EP20723281.0A 2019-04-26 2020-04-24 Patch de capteur destiné à être fixé à une plaque de base Active EP3958801B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201970261 2019-04-26
PCT/DK2020/050113 WO2020216427A1 (fr) 2019-04-26 2020-04-24 Patch de capteur destiné à être fixé à une plaque de base

Publications (2)

Publication Number Publication Date
EP3958801A1 EP3958801A1 (fr) 2022-03-02
EP3958801B1 true EP3958801B1 (fr) 2024-08-21

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EP20723281.0A Active EP3958801B1 (fr) 2019-04-26 2020-04-24 Patch de capteur destiné à être fixé à une plaque de base

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US (1) US20220192860A1 (fr)
EP (1) EP3958801B1 (fr)
WO (1) WO2020216427A1 (fr)

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WO2020216427A1 (fr) 2020-10-29

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